Improvement in grist-mills



` ERNST C. L. KUNNECKE.

Improvement in Grist Mills.

N0. 118,135. y Patented August 15, 1871.

UNITED STATES ERNST O. L. KUNNEOKE, OF DAYTON, OHIO.

IMPROVEMENT IN GRlST-IVIILLS.

Specilication forming part of Letters Patent No. 118,136, dated August 15, 1871.

To all whom it may concern:

Be it known that I, ERNST (l. L. KUNNECKE, of Dayton, in the county of Montgomery and in the State of Ohio,have invented certain new and useful Improvements in Grist-Mills; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing making a part of this specification, in which- Figure l is a side elevation of a grist-mill containing my improvements, and Fig. 2 is a vertical central section of the same on the line a' a: of Fig. l. v

Letters of like name and kind refer to like parts in each ofthe gnres.

The object of my invention is to render more easy and thorough the operation of grinding wheat; and it consists principally in the combination and relative arrangement ofthe cracking devices and runner, substantially as and for the purpose hereinafter specified. It consists further in the feeding devices and in the construction and operation of the means employed for adjusting the same, substantially as hereinafter shown.

In the annexed drawing, A represents a runner or upper stone, pivoted in the usual manner to or upon a spindle, B, and inclosed within a casing, O, all of usual construction. Resting upon and secured to the upper side of the casing (l is a metal frame composed of four arms, D, extending radially and horizontally outward from opposite sides of a central ring, Df, to or above said casin g, from thence downward to the latter, and again outward, so as to furnish a suiiicient bearing thereon for their ends, the arrangement.

of parts being such as to elevate said ring' D above the surface of said casing and bring it into coincidence with the central openings in the same and in the runner. Extending' vertically upward from one of the arms D, near the outer end of its horizontal upper portion, is a slotted standard, E, within which is pivoted one end of a lever, F, that from thence extends across the ring D and has its outer or free end over the foot of the opposite arm D. A screw, G, provided with a milled head, g, passing down ward through a threaded opening' in the end of said lever, with its lower end resting in a suitable cavity within the upper surface of the foot of said arm, furnishes a means whereby said lever can be raised or lowered as occasion requires. The 'central portion of the lever F is enlarged and pro vided with a central opening, somewhat less in size than that within the ring D', and has secured to or upon its lower side a ring, f, which corresponds exteriorly with the edge of said lever, while its interior arm has a diameter somewhat greater than that of said central opening. Fitted to or within the ring j' is the upper end of a short hollow cylinder, H, which is secured in place by means of two set-screws, j, that pass radially inward through said ring and have their inner ends bearing against the periphery of said cylinder. Inclosed within the cylinder H, and attached to or upon the spindle B,is a second cylinder, I, somewhat smaller in diameter than the interior of the former, and made solid and slightly tapering from its lower end upward, the periphery of which as well as the corresponding interior surface of said exterior cylinder are lgrooved so as to form abrading surfaces, between which, when moved in opposite directions, grain would be cracked or broken into small fragments, the size of which would be determined by the relative positions of said abrading faces. As thus arranged, it will be seen Ythat by raising or lowering the outer end ofthe lever F the position of the cylinder or cracker H will be correspondingly changed upon or with relation to the inner cylinder I, so as to increase or diminish the space radially between their contiguous surfaces, and consequently vary the size of fragments of grain that could pass between the same. The object of these cracking devices is to relieve the stones from a considerable portion of their work and render their action upon the gra-in more perfect and uniform, experience having shown that by their use a better quality of flour is produced and less power required than is possible in, or with ordinary mills. Pivot-ed within the upper end of the standard E is a second lever, K, which, extending across in a line with the lever F, has its outer end supported and rendered adjustable by means of a setscrew, L. The central portion of this lever is enlarged and furnishes a support for a funnelshaped hopper, M, the lower end of which extends downward into the cylinder or cracker H, the whole forming a means whereby grain is couveyed to the stones. By adjusting the lever, and, consequently, the hopper upward or downward so as to increase or diminish the space between the lower end ofthe latter and the upper end of the inner cracker, the ioW of grain into the crackers is correspondingly increased or diminished, this result being,l accomplished Without the usual noise and jarring common to most feeding devices.

Having thus fully set forth the nature and merits of my invention, what I claim as new is- 1. The combination and relative arrangement ofthe runner A, the crackers H and I, the pivoted lever F, and the regulating-screw G, substantially as and for the purpose specified.

2. The lever K pivoted Within the standard E, and adjusted vertically by means of the screw L and the hopper M, in combination with the runner A and crackers H and I, substantially as and for the purpose shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 29th da? of June, 1871.

ERNST C. L. KUNNECKE.

Vitnesse-s:

JN0. C. BAGGOTT, FREDK. B. SHULL. 

